Replace Kid with Child
I really love Lifecake. I have introduced it to all the women in my NCT group and beyond and they too are fans. It is a lifesaver for remote in-laws who don't get to see their grandchild as often as they would like. And, for me, as a UX type professional I love the fact that the photos are mine not yours.
The interface is excellent. I mainly use the app. I have nothing but praise except for the fact that it says 1 Kid. I would much prefer child.
I accept that this may be a question of taste and that I am but one user so perhaps a little user research would help you here.
My vote, however, would be to use Child.
All the best,
Ivanka Majic commented